The California condor, the largest bird in North America, was saved from extinction by a captive breeding program that increased its numbers in the wild. But now the condor is facing a new and pernicious threat — the lead from bullets used by game hunters. READ MORE

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Lead from bullets is killing other birds besides condors. This is an X-ray of a bald eagle with a lead bullet fragment in its stomach. The bird was alive when it was found in Maine, but later died. (Courtesy of The Raptor Center, University of Minnesota)